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Avalanche Forecast

Archived

Feb 11th, 2024–Feb 12th, 2024

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Lizard-Flathead, Flathead, Lizard.

New snow is falling on surface hoar. This could make avalanches easy to trigger. Start with small features and test to see how the new snow is bonding before moving into larger terrain.

Confidence

Moderate

Avalanche Summary

On Sunday, no new avalanches were reported at the time of publishing.

On Saturday, explosive-controlled storm slabs up to size 1.5 were reported in the Fernie area. Cornices are overhanging and may be reactive.

Snowpack Summary

Sunday night's snow will add to Saturday's 10 cm that sits on surface hoar which has been seen on all aspects and elevations. A thick rain crust now buried 30 to 40 cm deep seems to be well-bonded at lower elevations, but may need more time to bond in the alpine.

Crusts and facets in the mid and lower snowpack can still be found in isolated pockets.

Weather Summary

Sunday Night

Cloudy with 5 to 10 cm of snow. 20 to 25 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Monday

Cloudy with 5 to 10 cm of snow. 15 to 30 km/h west ridgetop wind. Treeline temperature -7 °C.

Tuesday

Mostly clear skies. 15 to 30 km/h north ridgetop wind. Treeline temperature -8 °C.

Wednesday

A mix of sun and cloud. 15 to 30 km/h east ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Pay attention to the wind, once it starts to blow fresh sensitive wind slabs are likely to form.
  • Use increased caution at all elevations. Storm snow is forming touchy slabs.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.